Reduced social-information provision by immigrants and use by residents following dispersal  Julie M. Kern, Andrew N. Radford  Current Biology  Volume 27, Issue 23, Pages R1266-R1267 (December 2017) DOI: 10.1016/j.cub.2017.10.045 Copyright © 2017 Terms and Conditions

Figure 1 Provision of social information by sentinels, and its use by foragers, in relation to dwarf mongoose dispersal. (A) A dwarf mongoose acting as a sentinel (raised guard) when it provides social information using vocalisations. Compared with residents (blue squares), dispersers were (B) significantly less likely to act as sentinels in the month after immigrating into a new group (red square; N = 10), but did not differ in their likelihood of acting as a sentinel either (C) prior to emigration (purple square; N = 10) or (D) five months after immigration (green square; N = 8). Shown in (B–D) are the mean daily proportions of scan samples in which a matched pair of individuals in the same group acted as a sentinel (connected by solid lines) and the overall mean for each residence status (solid squares) ± SE. Compared with the playback of sentinel surveillance calls from residents (blue squares), playback of those from immigrants resulted in foragers exhibiting (E) significantly more vigilance in the month after the immigration event (red square; N = 7), but (F) the same level of vigilance after at least five months of residence by an immigrant in a new group (green square; N = 6). Shown in (E,F) are the values for the same focal individuals in the two treatments (connected by solid lines) and the overall treatment mean (solid squares) ± SE. Current Biology 2017 27, R1266-R1267DOI: (10.1016/j.cub.2017.10.045) Copyright © 2017 Terms and Conditions